Onkyo TX-SR55 Manuale utente

TX-SR55

SERVICE MANUAL

AV RECEIVER

Black model

MODEL TX-SR55

120V AC, 60HzBMDD

Ref. No. 3855

122004

RC-591M

SAFETY-RELATED COMPONENT

WARNING!!

COMPONENTS IDENTIFIED BY MARK ON THE

SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE

CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK.

REPLACE THESE COMPONENTS WITH ONKYO

PARTS WHOSE PART NUMBERS APPEAR AS SHOWN

IN THIS MANUAL.

MAKE LEAKAGE-CURRENT OR RESISTANCE

MEASUREMENTS TO DETERMINE THAT EXPOSED

PARTS ARE ACCEPTABLY INSULATED FROM THE

SUPPLY CIRCUIT BEFORE RETURNING THE

APPLIANCE TO THE CUSTOMER.

TX-SR55

SPECIFICATIONS

Amplier Section

Video Section

Tuner Section

General

Video Inputs

Video Outputs

Audio Inputs

Audio Outputs

Other Jacks

Specifications and features are subject to change without

notice.

Power Output

(2 channels driven): 85 W + 85W (8 ,20Hz–20kHz, FTC)

120 W +120 W (6 ,1kHz,DIN)

150 W + 150 W (6 ,1kHz,JEITA)

Dynamic Power 220 W + 220 W (3 ,Front)

165 W + 165 W (4 ,Front)

100 W + 100 W (8 ,Front)

THD (Total Harmonic

Distortion) 0.08 % (Power Rated)

Damping Factor 60 (Front,1kHz,8 )

Input Sensitivity and

Impedance 200 mV/ 47 k (LINE)

Output Level and

Impeadance 200 mV/ 470 (REC OUT)

Frequency Response 10 Hz–100 kHz/ +1 dB-3 dB (Direct

mode)

Tone Control ±10 dB, 50 Hz (BASS)

±10 dB, 10 kHz (TREBLE)

SN Ratio 106 dB (LINEIHF-A)

Speaker Impedance 6 –

Input Sensitivity/Output

Level and Impedance 1Vp-p /75 (Component and S-VideoY)

0.7 Vp-p /75 (Component Pb/Cb,Pr/Cr)

0.28 Vp-p /75 (S-Video C)

1 Vp-p /75 (Composite)

Component Video

Frequency Response 5 Hz – 50 MHz

Tuning Frequency Range 87.5 MHz– 107.9 MHz

Usable Sensitivity Stereo:17.2 dBf 2 µV(75 IHF)

Mono: 11.2 dBf 1 µV(75 IHF)

S/N Ratio Stereo: 70 dB (IHF-A)

Mono:76 dB (IHF-A)

THD Stereo: 0.3 % (1kHz)

Mono:0.2 % (1kHz)

Frequency Response 30 Hz–15 kHz / ±1 dB

Stereo Separation 45 dB ( 1kHz )

Tuning Frequency Range 530 kHz–1700 kHz

Usable Sensitivity 30 µV

S/N Ratio 40 dB

THD 0.70%

Power Supply AC 120 V, 60 Hz

Power Comsumption 6.7A

Stand-by Power

Comsumption 1.0 W

Dimensions(W x H x D) 483 W x 175 H x 430 D mm

19"W x 6-7/8" H x 16-15/16" D inches

Weight 14.5 kg

32.0 lbs

Component Video Inputs 1,2,3

S-VideoCompatibleJack

Inputs DVD,VIDEO1,VIDEO2,VIDEO3,

VIDEO4

A/V Inputs DVD,VIDEO1,VIDEO2,VIDEO3,

VIDEO4

Component Video

Output OUT

S-VideoCompatibleJack

Outputs MONITOR OUT,VIDEO1,VIDEO2

A/V Outputs MONITOR OUT,VIDEO1,VIDEO2

Digital Inputs Optical : 3, 1 (Front Panel)

Coaxial : 2

Analog Inputs DVD(MULTICHANNEL),VIDEO1,

VIDEO2,VIDEO3,VIDEO4,TAPE,CD

Multichannel Inputs 6

Digital Outputs 1 (Optical )

Analog Outputs TAPE,VIDEO1,VIDEO2

Subwoofer Pre Outputs 1

Speaker Outputs 9

Phones 1

RS-232 Control 1

IR Input/Output 1

12V Trigger Out 3

2.To initialize the unit

This device employs a microprocessor to perform various

functions and operations.If interference generated by an external

power supply, radio wave, or other electrical source results in

accident which causes the specified operations and functions to

operate abnormally.

To perform a result, please follow the procedure below.

1.Press and hold down the VIDEO-1 button, then press the

STANDBY/ON button.

2.After "CLEAR" is displayed, the preset memory and each

mode stored in the memory, such as surround, are

initialized and will return to the factory setting.

3. Unplug the power supply cord.

3. Safety-check out

(U.S.A. model only)

After correcting the original service problem, perform the

following safety check before releasing the set to the customer.

Leakage Current Check

Measure leakage current to a known earth ground(water pipe,

conduit, etc.) by connecting a leakage current tester between

the earth ground and exposed metal parts of the appliance

(input/output terminals, screwheads,metal overlays, etc.).

Plug the power supply cord directly into a 120V AC 60 Hz outlet

and turn Standby switch on.Any current meausred must not

exceed 0.5mA.

1. Replacing the fuses

This symbol located near the fuses indicates that the

fuse used is fast operating type. For continued protection against

fire hazard, replace with same type fuse.For fuse rating refer to

the marking adjacent to the symbol.

Ce symbole indique que le fusible utlise est a rapide.

Pour une protection permanente, n'untiliser que fusibles de

meme type.Ce darnier est la qu le present symbol est

appse.

CIRCUIT NO. PART NO.

DESCRIPTION

F6901,F6902 252301 or 12A-TUL-250V or

252196 12A-UL/T-314,Fuse

F901 252199 10A-UL,Fuse

F903 252164 or 5A-UL/T-237 or

252258 5A-T/UL-ST2,Fuse

F9501 252160 or 2.5A-UL/T-237 or

252254 2.5A-T/UL-ST2,Fuse

TX-SR55

SERVICE PROCEDURES

A038

A039

A033

A037

A070

U11

A187

A031

A059

A031

A046

A091

A031 A031

A036

A031

U33

A031

A042

A031

A211

A031

A101

Q6050

Q6055

Q6064

Q6066

A031

Q6050A

A151

A031

T901

A070

A196

A057

E800

A056

A041 A018

A011

A006

A001

A031

A176

A017

A026

A051

A206

A201

A196

A029

A050

A013

A206

A201

A216 A101

Q6050A

A031

A081

U27

U36

U18 U21

U22

U12

U32

U26

U30

U31 U29

U19

U16

U17

U13

P761

P7502

P6931

P7501

F903F901

F9501

F6902

F6901

U14

U23

A016

A045

A021

A043

A161

A161 A189

A188

TX-SR55

EXPLODEDVIEW

TX-SR55

BCDE

TX-SR55

BLOCK DIAGRAM Amplifier section

TAPE_OUT_R

TAPE_OUT_L

V2_OUT_L

V2_OUT_R

V1_OUT_L

V1_OUT_R

Z2_R

Z2_L

MIX_R

MIX_L

SOURCE_L

SOURCE_R

RECOUT_L

RECOUT_R

MCH_SR

MCH_SL

MCH_SW

MCH_CT

ADLT+

ADRT+

ADLT-

ADRT-

ADRT+

ADLT+

ADLT-

RX0

RX1

RX2

RX3

RX4

RX5

RX6

DAC_FL

DAC_CT

DAC_SW

DAC_FR

DAC_SR

DAC_SBR

DAC_SBL

DAC_SL

VOLIN_SBR

VOLIN_SBL

MIC

TUNER PACK

VIDEO4

NJW1157

TAPE OUT

TAPE IN

VIDEO3 IN

VIDEO2 OUT

VIDEO2 IN

VIDEO1 OUT

VIDEO1 IN

DVD

MSL/MSR

MC/MSW

COAX 1

COAX 2

Digital Input

OPT FRNT

OPT1

OPT2

OPT3

OPT

Digital Output

-6dB

+9.7dB

TC9162

DIR

2ch ADC

CS42518 8ch DAC

+6dB

VLSCLPF

TONE

MIC AMP

+6dB

VLSCLPF

+6dB

VLSCLPF

+6dB

VLSCLPF

LPF VLSC

VLSCLPF

BCD

TX-SR55

BLOCK DIAGRAM Amplifier section

Z2RL

SBRL

HPRL

HPIN

FRL

CSRL

FL_PO

FR_PO

CT_PO

SBL_PO

SBR_PO

SW_PO

SL_PO

SR_PO

SBMUT

Z2LMUT

AMUT

Z2SW_PO

Z2L_PO

Z2R_PO

DC24 in for

A-BUS

40k IR in1 for

A-BUS

40k IR in2 for

A-BUS

56k IR OUT for

A-BUS

12V TRIGGER A

12V TRIGGER B

12V TRIGGER C

IR IN

IR OUT

RJ-45 for

A-BUS

RIex

RS-232C

12V TRIDDER

CONTROL

IR 56k

RE-MODULATOR

DE-MODULATOR

INTERFACE

RS-232C

POWER AMPLIFIER

+29dB

PREOUT

FRONT LEFT

FRONT RIGHT

CENTER

SURR. LEFT

SURR. RIGHT

HEADPHONES

ZONE2 LEFT

ZONE2 RIGHT

SUUR. BACK

LEFT

SUUR. BACK

RIGHT

SPEAKER TERMINALS

TONE

+6dB@ZONE2

+20.2dB

TONE

DSP SD_RAM

IC42S16100

2M Byte

CS494003

FLASH ROM

MX29LV040

2M Bit

LPF VLSC

+6dB

VLSCLPF

+6dB

VLSCLPF

+6dB

ZONE2 PREOUT/LINEOUT

BD3814

107

118

106

134

109

110

BCD

TX-SR55

BLOCK DIAGRAM Video section

VIDEO1

DVD

VIDEO2

VIDEO3

VIDEO4

S VIDEO INPUT

DVD

VIDEO1

VIDEO2

VIDEO3

VIDEO4

COMPOSITE VIDEO INPUT

COMPONENT VIDEO INPUT

CB1

CR1

CB2

CR2

CB3

CR3

NJM2595

OSD

LC74763-9836

DAC

AIN2

AIN1

AIN3

AIN4

AIN5

OSD*(SDET+SI)

SDET*{OSD+(OSD*SI)}

SDET*OSD

DIGITAL VIDEO ENCO

ADV7172

DIGITAL VIDEO DECODER

ADV7183A

COMPOSITE

COMPOSITE / Y2

6dB

0dB

-6dB

BCD

TX-SR55

BLOCK DIAGRAM Video section

COMPONENT VIDEO OUTPUT

COMPOSITE VIDEO OUTPUT

MONITOR

VIDEO1

VIDEO2

VIDEO1

MONITOR

DACA

DACB

DACC

DACD

DACE

DACF

LA7106M

S VIDEO OUTPUT

SDET*OSD

SDET*{OSD+(OSD*SI)}

LA7106M

SDET*{OSD+(OSD*SI)}

ENCODER

6dB

BCD

TX-SR55

BLOCK DIAGRAM

BCDEFGH

Z2RL

SBRL

HPRL

HPIN

FRL

CSRL

FL_PO

FR_PO

CT_PO

SBL_PO

SBR_PO

SW_PO

SL_PO

SR_PO

TAPE_OUT_R

TAPE_OUT_L

V2_OUT_L

V2_OUT_R

V1_OUT_L

V1_OUT_R

Z2_R

Z2_L

MIX_R

MIX_L

SOURCE_L

SOURCE_R

RECOUT_L

RECOUT_R

MCH_SR

MCH_SL

MCH_SW

MCH_CT

ADLT+

ADRT+

ADLT-

ADRT-

ADRT+

ADLT+

ADLT-

RX0

RX1

RX2

RX3

RX4

RX5

RX6

DAC_FL

DAC_CT

DAC_SW

DAC_FR

SBMUT

Z2LMUT

AMUT

DAC_SR

DAC_SBR

DAC_SBL

DAC_SL

Z2L_PO

Z2R_PO

VOLIN_SBR

VOLIN_SBL

MIC

TUNER PACK

VIDEO4

NJW1157

TAPE OUT

TAPE IN

VIDEO3 IN

VIDEO2 OUT

VIDEO2 IN

VIDEO1 OUT

VIDEO1 IN

DVD

DC24 in for

MSL/MSR

A-BUS

40k IR in1 for

A-BUS

MC/MSW

40k IR in2 for

A-BUS

56k IR OUT for

A-BUS

COAX 1

COAX 2

Digital Input

OPT FRNT

OPT1

OPT2

OPT3

OPT

Digital Output

12V TRIGGER A

12V TRIGGER B

12V TRIGGER C

IR IN

IR OUT

RJ-45 for

A-BUS

RIex

RS-232C

12V TRIDDER

CONTROL

IR 56k

RE-MODULATOR

DE-MODULATOR

INTERFACE

RS-232C

POWER AMPLIFIER

+29dB

PREOUT

FRONT LEFT

FRONT RIGHT

CENTER

SURR. LEFT

SURR. RIGHT

HEADPHONES

ZONE2 LEFT

ZONE2 RIGHT

SUUR. BACK

LEFT

SUUR. BACK

RIGHT

SPEAKER TERMINALS

TONE

+6dB@ZONE2

-6dB

+9.7dB

+20.2dB

TC9162

DIR

2ch ADC

CS42518 8ch DAC

+6dB

VLSCLPF

TONE

MIC AMP

DSP SD_RAM

IC42S16100

2M Byte

CS494003

FLASH ROM

MX29LV040

2M Bit

+6dB

VLSCLPF

+6dB

VLSCLPF

+6dB

VLSCLPF

LPF VLSC

+6dB

VLSCLPF

+6dB

VLSCLPF

+6dB

ZONE2 PREOUT/LINEOUT

BD3814

107

118

106

134

109

110

TX-SR55

BLOCK DIAGRAM Video section

BCDEFGH

VIDEO1

DVD

VIDEO2

VIDEO3

VIDEO4

S VIDEO INPUT

DVD

VIDEO1

VIDEO2

VIDEO3

VIDEO4

COMPOSITE VIDEO INPUT

COMPONENT VIDEO INPUT

CB1

CR1

CB2

CR2

CB3

CR3

COMPONENT VIDEO OUTPUT

NJM2595

COMPOSITE VIDEO OUTPUT

MONITOR

VIDEO1

VIDEO2

VIDEO1

MONITOR

OSD

LC74763-9836

DACA

DACB

DACC

DACD

DACE

DACF

AIN2

AIN1

AIN3

AIN4

AIN5

LA7106M

S VIDEO OUTPUT

SDET*OSD

OSD*(SDET+SI)

SDET*{OSD+(OSD*SI)}

SDET*OSD

SDET*{OSD+(OSD*SI)}

SDET*OSD

LA7106M

SDET*{OSD+(OSD*SI)}

DIGITAL VIDEO ENCODER

ADV7172

DIGITAL VIDEO DECODER

ADV7183A

COMPOSITE

COMPOSITE / Y2

6dB

0dB

-6dB

6dB

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